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Food Of The Bigmouth Buffalo, Lctiobus Cyprinellus (Valenciennes), In Northwest Iowa Lakes, Tom Moen

Proceedings of the Iowa Academy of Science

Three species of the genus Ictiobus occur m Iowa waters; the bigmouth buffalo, Ictiobus cyprinellus, the black buffalo, Ictiobus niger, and the smallmouth buffalo, lctiobus bubalus. Of these three species the bigmouth buffalo is the most common in the Northwest Iowa lakes, the remaining two species are comparatively rare. Bigmouth buffalo (hereafter referred to as buffalo) have been removed from Iowa lakes as undesirable and obnoxious fish since the early nineteen hundreds. Harlan and Speaker (1951) state that nearly a half million pounds are removed from the inland waters of the state each year by the State …

The Nature Of The So-Called Electric Organs In Ostracoderms, George M. Robertson

Proceedings of the Iowa Academy of Science

There seems to be something about working with fossils which loosens the imagination, and one of the ways in which the emancipated imagination goes to work is in trying to determine the functions of problematic structures. In general we believe we are justified in assuming that the structures we identify as orbits in the skulls of fossil fishes housed eyes. Most of us would also agree to accept and use identification of structures closely resembling what we find in modern forms, such as otic capsules, nasal organs, lateral line systems, portions of the brain-case, etc. Other structural features are not …

Precociously Developed Brachylaimid Metacercariae Within Sporocysts, Martin J. Ulmer

Proceedings of the Iowa Academy of Science

The occurrence of precociously developed metacercariae among digenetic trematodes has been noted by numerous investigators both here and abroad. Included in the literature are references to species representing more than a dozen families which have been recorded as exhibiting this phenomenon. Among many groups it manifests itself in progenetic development, i. e., the attainment of sexual maturity by metacercariae (or cercariae occasionally) while still within the first intermediate host, with resultant egg production, and at times the appearance of viable miracidia within such metacercariae. Buttner (1950, 1951) in an intensive study of progenesis among digenetic trematodes provides experimental evidence indicating …

Correlations Between Oxidase Activity & Dioecism In Phanerograms, John A. Aitchison

Proceedings of the Iowa Academy of Science

Differences in the oxidation potential of tissue fluids of the sexes in dioecious plants have long been known and they appear to be causally related to the contrasts of the staminate and pistillate metabolism (2, 3, 5, 12, 13). Many plant scientists have considered the Manoilev oxidation reaction a valuable test in studies of this type (9, 10, 11). Although its simplicity and wide applicability decommend the Manoilev test, it has not been wholly satisfactory or reliable (8). Color reactions are often unsuitable as quantitative measures of oxidase activity due to the small amount of oxidation necessary to produce marked …

Biographical Note On Persoon, Chester R. Benjamin

Proceedings of the Iowa Academy of Science

Although the name and works of Christian Hendrik Persoon are well known to most botanists, the biography of this illustrious mycologist is not. This fact is attributable to the following reasons: the dearth of accurate information; incompleteness of any biographical account; and the difficulty involved in finding that material which is available. An attempt is made here to alleviate this situation.

Iowa State Teachers 1954 Football Dopebook, Iowa State Teachers College

Athletics Media Guides

Contents:

--Grid Schedule
--Thumbnail of Iowa Teachers Football for 1954
--Football Coaching Staff
--The Man Behind the Panther's Success - Coach Clyde L. (Buck) Starbeck
--Coaching Record of Buck Starbeck at Iowa Teachers by Season
--Records Against Individual Opponents
--Assistant Coaches
--Iowa Teachers Lettermen Picture
--1954 Prospects
--Iowa Teachers Squad - 1954
--Varsity Letter Winners for Football 1953
--Numeral Award Winners for Freshmen Football 1953
--Record of Iowa Teachers' Series with '54 Foes
--Past Results with '54 Foes
--1954 Schedule

--1953 Results
--Opponents
-- 1953 ISTC Statistics
--1953 Individual Totals for ISTC
--1953 North Central Conference Standings
--North Central Conference …

A Review Of The Interstate Park, Wisconsin Bison Find, Harris A. Palmer

Proceedings of the Iowa Academy of Science

In the fall of 1936, members of a C.C.C. Company engaged in excavating a ditch, uncovered the partial remains of several extinct bison in Interstate Park in Northwestern Wisconsin, about 40 miles northeast of St. Paul. The site, located in Polk County and known locally as Mountain Meadow, was a former peat bog situated in an area of drift deposited by the Grantsburg sublobe of the Keewatin ice sheet. The drift has been mapped as Mankato. The find was reported immediately to Dr. Alonzo Pond, an archeologist formerly of Beloit College, who at the time was connected with the National …

The Need For Laboratory Culture Of Algae As A Means To Accurate Classification, R. L. Hulbary

Proceedings of the Iowa Academy of Science

We are still confronted with a situation in which many genera of algae have species that cannot be identified without knowledge of stages in the life cycle which do not lend themselves to preservation as dried herbarium specimens. Corallary to this situation and arising from it is the difficulty in establishing a soundly based nomenclatural type. Such familiar genera as Chlorococcum, Characium, Spirogyra, Stigeoclonium, Trachelomonas, Chlamydomonas, Haematococcus must be present in more than one stage of the life cycle in order to be classified. Many Chlorophyta, such as Stigeoclonium and Cladophora, or Cyanophyta, such as Calothrix and Stigeonema, do not …

The Synthesis Of Salicyl Glucuronide Derivatives, Emilio Arredondo, W. D. Paul, J. I. Routh

Proceedings of the Iowa Academy of Science

The formation of glucuronides of salicylic acid as conjugated products in the body has been demonstrated for many years. Quick (1) in 1932 found salicyl diglucuronates in the urine of dogs fed salicylic acid, whereas, Kapp and Coburn (2) demonstrated the presence of both mono- and di-glucuronides of salicylic acid in human urine. Bray and coworkers (3) observed small amounts of ester linked glucuronides and ether linked glucuronides in the urine of rabbits fed salicylic acid. Recently, Smith et al. (4) using C¹⁴ carboxyl labeled salicyclic acid obtained evidence for the excretion of the two types of mono-glucuronides …

The Flora Of Washington County, Iowa, Burdette L. Wagenknecht

Proceedings of the Iowa Academy of Science

This botanical survey of the vascular plants of Washington County, Iowa was made in an effort to increase our knowledge of the vegetation of southeastern Iowa. Prior to this survey little botanical collecting had been done in Washington County. Sixty-eight specimens from Washington County were found by the writer in looking through the herbarium of the State University of Iowa. These were collected by the late Professor B. Shimek. The field work was carried on for a period of one growing season. Over 3,500 miles were traveled by the writer in making the survey. The first collections were made April …

Evaluation Of Work Decrement Indicators, Virtus W. Suhr

Proceedings of the Iowa Academy of Science

The primary purpose of the study was to determine the nature of the practice curves for various types of measurement postulated as fatigue detectors. At the same time it was thought advisable to design the experiment in such a way as to secure some information on the effect of ingestion of tea on certain psychomotor performance tasks at different practice levels as well as throughout the entire series of practices. In other words this study was set up to select some promising techniques for measuring work decrement over a period of several hours continuous performance and to establish the degree …

Autumnal Decimation Of Mearns Cottontail, Decatur County, Iowa, 1952, Paul D. Kline, George O. Hendrickson

Proceedings of the Iowa Academy of Science

In summer and early in autumn hunters frequently see many cottontails along roads. When they start to hunt the animals late in autumn, the pursuers express disappointment often at the fewer rabbits, and inquire for causes of the decimation. To obtain better understanding of reasons for autumnal losses investigation was conducted on a 185-acre tract of farm land, Decatur County, Iowa, from July 28 to December 31, 1952. Particularly the losses and causative agents during September and the three following months will be reported.

The Relation Of Buckthorn To Losses From Crown Rust Of Oats, W. H. Bragonier

Proceedings of the Iowa Academy of Science

Crown rust is the most destructive disease of oats in Iowa. Losses during the 1930's and early 40's ran high; 30 per cent in 1941. From 1944 to 1948 very little rust occurred, but from 1949 to 1952, loss estimates averaged $45,000,000 per year. The role of buckthorn (Rhammus cathartica L.) as the alternate host of the crown rust pathogen (Puccinia coronata Corda) was discovered by De Bary in 1866. More recent research has shown all species of Rhamnus susceptible to one or more varieties of this leaf rust producing fungus. Occurring in hedges and as escaped bushes …

Table Of Contents

Proceedings of the Iowa Academy of Science

No abstract provided.

Status Of Trifolium Ambiguum As A Forage Legume, Wayne F. Keim

Proceedings of the Iowa Academy of Science

Trifolium ambiguum, more commonly known as Pellett clover, Honey clover, or Kura clover, is a legume possessing some highly desirable agronomic qualities (Figure 1). Most important of these qualities is its exceptional ability to spread extensively by rhizomes, an attribute significant in establishing a perennial forage legume. Secondly, it is highly attractive to the bees because of its high nectar content. Also, it is winter hardy and resistant to some serious clover diseases (9). Experiment station and soil conservation specialists have indicated a real interest in the species. Its extensive "root" system makes it valuable for soil conservation purposes.

Variation In Leaf Pubescence In Viola Incognita Brainerd And V. Renifolia Gray, Norman H. Russell

Proceedings of the Iowa Academy of Science

One of several morphological characters widely used in the separation of species and varieties in the genus Viola is that of lamina pubescence. In some cases, particularly in the common acaulescent* blue violets, specific distinctions based primarily on leaf pubescence have proven unsatisfactory. In other instances in Viola, presence or absence of pubescence has served as an excellent separating character between certain closely allied species. In his comprehensive survey of hybridism in the violets, Brainerd (1924) often used the amount of pubescence as an indication of degree of hybridization and demonstrated in many cases that it was inherited apparently in …

Q And L Difference Scores On The A.C.E. Test, Martin F. Fritz

Proceedings of the Iowa Academy of Science

Those who have used the American Council on Education Psychological Examination (A.C.E.) will, no doubt, have noted that in a number of cases there is considerable difference between the Quantitative (Q) and the Linguistic (L) centile ranks. This report is concerned with an investigation to determine in a limited way, what significance there might be in the disparity of such scores. In the fall of 1953, 2500 new students entered Iowa State College for whom scores on the A.C.E. were available. From this group, all cases were selected where the Q and the L centile ranks differed by 50 or …

Increasing The Objectivity Of Final Marks In Multiple-Section Courses, Charles O. Neidt

Proceedings of the Iowa Academy of Science

During the past forty years the reliability of course marks assigned by teachers has received considerable research attention and much speculation from investigators. A review of the literature relating to this topic reveals that researchers have long recognized the importance of evaluating this characteristic of course marks, but have been restricted in their research endeavor by lack of appropriate methodological techniques.

1954 Old Gold, Iowa State Teachers College

UNI Yearbooks

The student yearbook of the Iowa State Teachers College, later known as the University of Northern Iowa.

Round-Table Group Therapy With Psychotic Patients, Matthew D. Mermelstein, Albert C. Voth

Proceedings of the Iowa Academy of Science

Although the use of group procedures for dealing with emotionally disturbed individuals goes back centuries, it is only within comparatively recent years that it has been used extensively and intensively in our mental hospitals with an awareness of group mechanisms and the forces that make up for restoring the desirable state of psychic equilibrium. As applied today group psychotherapy is initially a concession to the fact that there are too few therapists for the many patients in our mental hospitals and that, in order to reach as many patients as possible, group techniques must be applied.

Reduction In The Loudness Of A 250-Cycle Tone In One Ear Following The Introduction Of A Thermal Noise In The Opposite Ear, James L. Shapley

Proceedings of the Iowa Academy of Science

Under certain conditions, the perception of a given sound stimulus in one ear may be altered when a different sound is presented to the opposite ear. For instance, changing an observer's perception of the loudness of a sound presented by an earphone to one ear by introducing a dissimilar sound in the opposite ear has been reported in the literature. Egan (1948), using two subjects, found that the loudness of speech delivered to one ear only was nearly 7 db louder than when a 70 to 80 db sensation level thermal noise was introduced into the opposite ear. A possible …

The Host Affinities Of Lsospora Bigemina-Type Coccidia, Elery R. Becker

Proceedings of the Iowa Academy of Science

Dogs, cats and certain other carnivores are the hosts of a coccidium of the family Eimeriidae known as lsospora bigemina (Stiles, 1892) (Fig. l). This Isospora has three outstanding and peculiar characteristics: (1) Its endogenous development takes place in the lamina propria or cores of the villi of the small intestine of its host in chronic infections, but in acute infections it may colonize the epithelial cells of the entire small intestine: (vide Wen yon, 1926, and Wen yon and Sheather, 1925) ; (2) Its oocysts sporulate completely in situ when occurring subepithelially and are passed in the fully …

Electron Micrographs Of The Pellicle Of A Species Of Euglena, James F. Reger, H. W. Beams

Proceedings of the Iowa Academy of Science

Electron microscope studies on whole mounts of Euglena demonstrated that the pellicle was composed of alternate grooves and ridges which were orientated in a spiral and longitudinal direction with respect to the long axis of the animal (Saxe 1947; Groupe 1947). Wolkin and Palade (1953) have presented electron micrographs of sectioned Euglena and made brief reference to the pellicle. It is the purpose of this paper to present further details on the structure of the Euglena pellicle as seen in thinly sectioned material under the electron microscope.

Results Of Iowa's First Deer Season In Recent Years, Glen C. Sanderson, E. B. Speaker

Proceedings of the Iowa Academy of Science

The white-tailed deer, Odocoileus virginianus, was undoubtedly abundant along the streams of Iowa when white man first settled here. The greater portion of the state, however, was covered with a lush growth of prairie plants and grasses more conclusive to the production of prairie chicken than of deer. Leopold (Crane, 1933) reported the original stock of deer was mostly gone by 1865, although a few herds remained until about 1915. Madson (1953) elaborated upon the blizzards of 1848-1849 and the heavy kill by early settlers during the terrible winter of 1856. This may well have marked the beginning of the …

Stability And Validity Of The Strong Vocational Interest Blank In The Prediction Of Success In Veterinary Medicine Curriculum, T. E. Hannum, John R. Thrall

Proceedings of the Iowa Academy of Science

That indices of mental ability alone do not predict scholastic achievement adequately is a well-known fact. It would seem a reasonable hypothesis, then, that non-intellective influences, notably motivation or interest, are operative. This being the case, consideration of a measure of interest along with the more customary employment of some measure of academic aptitude could be hoped to enhance prediction of scholastic success. Further, selection only on the basis of ability to complete the curriculum is a short-sighted goal for administrators, especially in professional curricula such as Veterinary Medicine. They might well be equally concerned about choosing those students who …

Effects Of The Wind On Water Movements In Lake West Okoboji, Iowa, John E. Bardach

Proceedings of the Iowa Academy of Science

The term "seiche" was introduced in to limnological literature by Forel in 1895. He observed surface-oscillations on the Lake of Geneva and recognized them as rhythmic movements or standing waves, caused by the wind, especially noticeable when the wind fluctuated in force or ceased altogether, permitting the surface water which had piled up on the downwind surface of the lake to seek its own level again. Surface seiches have also been observed on some American lakes; Lake Mendota (Bryson and Kuhn, 1952) and Lake Erie (Hayford, 1922) to mention only a few. The amplitude of the surface seiche decreases with …

Index

Proceedings of the Iowa Academy of Science

No abstract provided.

In Memoriam: Nathan Graham Alcock; Harry Martin Blomquist; John Franklin Carlson; Charles C. Deam; Arthur Karr Gilkey

Proceedings of the Iowa Academy of Science

No abstract provided.

An Annotated List Of The Fishes In The Streams Tributary To The Missouri River In Iowa, Harry M. Harrison, Everett B. Speaker

Proceedings of the Iowa Academy of Science

This paper is a report on the fishes collected in 17 streams draining the western and southern slopes of Iowa into the Missouri River. These streams include the Big and Little Sioux, Rock, Floyd, Ocheyedan, Otter, Soldier, Boyer, Maple, Willow, Plumb, Walnut, Nishnabotnas, Nodaway, Grand, 102 and Chariton Rivers. A total of 18 families represented by 74 species of fish arc reported.

The 1953 Crown And Stem Rust Epidemic Of Oats In Iowa, Arden F. Sherf

Proceedings of the Iowa Academy of Science

Rather than to rely on the efforts of historians of the future, this paper will record the devastating oat rust epidemic that occurred in Iowa in 1953. Pertinent facts regarding the initiation, development, geographic distribution, and final loss estimates due to oat crown rust and stem rust will be presented. Attempts will be made to correlate rust spread and development with available meteorological data. · Rusts have attacked cereals for all of recorded history. Some of the oldest rust records are to be found in the Bible where Hebrew writers frequently mention rusts, smuts, and blights on their grain crops. …